From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751564AbeDVKQ6 (ORCPT ); Sun, 22 Apr 2018 06:16:58 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:58907 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751028AbeDVKQz (ORCPT ); Sun, 22 Apr 2018 06:16:55 -0400 Date: Sun, 22 Apr 2018 12:16:54 +0200 From: Pavel Machek To: Ferry Toth Cc: linux-kernel@vger.kernel.org Subject: Re: DOS by unprivileged user Message-ID: <20180422101654.GA26243@amd> References: <9023506.UBh6vynRGa@delfion> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="FL5UXtIhxfXey3p5" Content-Disposition: inline In-Reply-To: <9023506.UBh6vynRGa@delfion> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --FL5UXtIhxfXey3p5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu 2018-04-19 21:13:35, Ferry Toth wrote: > It appears any ordinary user can easily create a DOS on linux. >=20 > One sure way to reproduce this is to open gitk on the linux kernel repo= =20 > (SIC) on a machine with 8GB RAM 16 GB swap on a HDD with btrfs and quad c= ore=20 > + hyperthreading. But I will be easy enough to get the same effect with m= ore=20 > RAM, other fs etc. You may want to disable swap. Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --FL5UXtIhxfXey3p5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlrcYRYACgkQMOfwapXb+vKvCQCgrIY4oOaVe/XaxV5FCpC/YXrQ gqAAnitD+zjsSI4yOHEunLo9kK/1Wqgm =o7QQ -----END PGP SIGNATURE----- --FL5UXtIhxfXey3p5--